<!DOCTYPE html>
<style>
    :root {
        --test-url: url('https://ladybird.org/');
    }
</style>
<script src="../include.js"></script>
<script>
    test(() => {
        const style = getComputedStyle(document.documentElement);
        println(`style.getPropertyValue("--test-url") = ${style.getPropertyValue("--test-url")}`);
    });
</script>
